if its consumer figure 8 cable basically the thicker the cable the longer you can run the cable also depends on how powerful the speakers are. you can buy figure 8 cable at jaycar by the meter (there are cheaper places though) theres normaly a stripe on one of the cables so as long as the stripe is connected to the red and the non stripe connected to the black then it will work (if its the other way round it will still work just as long and the red on the amp is connected to the red on the speaker). if its not consumer send me a pic and i can tell you what you need and where you can get it.